647812-A is referenced by 75 patents.
647,812. Flooring tiles; skirtings. FREEMAN, W. S. Aug. 9, 1948, No. 20938. [Classes 20(iv) and 87(i)] A flooring tile 20, preferably of rubber, and of triangular, square, rectangular, pentagonal, hexagonal or sector shape is formed along at least one edge with a channel 24 or 25 in one main face leaving a rib 26'between the channel and the edge face, on at least another edge with a tongue or tongues 21, 22 and on at least one other edge with a corresponding groove. The channel and rib may be of angular or rounded form, and the tongues and grooves may be of angular, tapered or rounded form; two or three tongues and grooves may be provided in the thickness of the tile. L-shaped floor-edge tiles 31 are provided having tongues, grooves or rabbets to engage adjacent floor tiles.